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  2. Phos-Chek - Wikipedia

    en.wikipedia.org/wiki/Phos-Chek

    Concerns have been raised that Phos-Chek harms fish and aquatic life; and that it causes long-term effects on soils, insects, and microbiology. [13] A group based in Oregon called Forest Service Employees for Environmental Ethics sued the U.S. Forest Service, claiming the service violated the Clean Water Act by spraying Phos-Chek without assessing the product's harmful effects on waterways.

  3. Geofence - Wikipedia

    en.wikipedia.org/wiki/Geofence

    A geofence can be dynamically generated (as in a radius around a point location) or match a predefined set of boundaries (such as school zones or neighborhood boundaries). The use of a geofence is called geofencing, and one example of use involves a location-aware device of a location-based service (LBS) user entering or exiting a geofence ...

  4. The Wave (Arizona) - Wikipedia

    en.wikipedia.org/wiki/The_Wave_(Arizona)

    The Wave can be challenging to locate due to the lack of an established, marked trail. [16] Hikers must choose their own route across the open desert, which requires traversing exposed sandstone, sand dunes, and sandy wash bottoms. A formal guide sheet for navigating to The Wave is now provided to every permitted hiker by the BLM. [18]

  5. Perimeter fence - Wikipedia

    en.wikipedia.org/wiki/Perimeter_fence

    An example of detector applied on a perimeter fence is the mems accelerometer. The advantages of having a perimeter intrusion detection system are various, and of great importance, for example we obtain a remarkable capacity to analyse the information produced by each sensor, without the need to increase the resources at the centre.

  6. Senstar Corporation - Wikipedia

    en.wikipedia.org/wiki/Senstar_Corporation

    The new organization went under the name Senstar-Stellar Corporation in its North American operations, while Senstar remained the name for European operations. In 1998 Magal acquired Perimeter Products Inc., a manufacturer of fence-mounted sensors and bistatic microwave sensors, where it remained as a separate entity.

  7. Geoboard - Wikipedia

    en.wikipedia.org/wiki/Geoboard

    A geoboard is a mathematical manipulative used to explore basic concepts in plane geometry such as perimeter, area and the characteristics of triangles and other polygons. It consists of a physical board with a certain number of nails half driven in, around which are wrapped geo bands that are made of rubber. Normal rubber bands can also be used.

  8. As California fire season begins, debate over wildfire ... - AOL

    www.aol.com/news/california-fire-season-begins...

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  9. Ground-penetrating radar - Wikipedia

    en.wikipedia.org/wiki/Ground-penetrating_radar

    EU Detect Force Technology, an advanced soil research company, design utilizes X6 Plus Grounding Radar (XGR) as an hybrid GPR application for military mine detection and also police bomb detection. The "Mineseeker Project" seeks to design a system to determine whether landmines are present in areas using ultra wideband synthetic aperture radar ...